Here is full specs comparison of new announced Nikon D810, and D800/E, Canon EOS 5D Mark III.
| Feature | D810 | 5D Mark III | D800/E |
|---|---|---|---|
| Sensor Resolution | 36.3 MP | 22 MP | 36.3 MP |
| Sensor Type | CMOS | CMOS | CMOS |
| Sensor Size | 35.9 x 24 mm | 36 x 24 mm | 35.9 x 24 mm |
| Sensor Type | Full Frame | Full Frame | Full Frame |
| AA Filter | No | Yes | D800: YesD800E: No |
| Image Size | 7360 x 4912 |
5760 x 3840 | 7360 x 4912 |
| Image Processor | Expeed 4 | Digic 5+ | Expeed 3 |
| Viewfinder Type | Optical (tunnel) | Optical (pentaprism) | Optical (pentaprism) |
| Viewfinder Coverage | 100% | 100% | 100% |
| Viewfinder Magnification | 0.7x | 0.71x | 0.7x |
| Storage Media | SD/SDHC/SDXC, CompactFlash | SD/SDHC/SDXC, CompactFlash | SD/SDHC/SDXC, CompactFlash |
| Continuous Shooting Speed | 5 FPS | 6 FPS | 4 FPS |
| Max Shutter Speed | 1/8000 to 30 sec | 1/8000 to 30 sec | 1/8000 to 30 sec |
| RAW Size S | 12-Bit Uncompressed | – | – |
| Native ISO Sensitivity | ISO 64-12,800 | ISO 100-25,600 | ISO 100-6,400 |
| Boosted ISO Sensitivity | ISO 32, ISO 51,200 | ISO 50, ISO 102,400 | ISO 50, ISO 12,800-25,600 |
| Autofocus System | 51 points | 61 points | 51 points |
| Video Output | H.264, MPEG-4 | H.264 | H.264, MPEG-4 |
| Video Maximum Resolution | 1920 x 1080 (60p, 50p, 30p, 25p, 24p) | 1920 x 1080 (29.97, 25, 23.976 fps) | 1920 x 1080 (30, 25, 24 fps) |
| LCD Size | 3.2″ Fixed TFT-LCD | 3.2″ Fixed TFT-LCD | 3.2″ Fixed TFT-LCD |
| LCD Resolution | 1,229,000 dots | 1,040,000 dots | 921,000 dots |
| Exposure Compensation | ±5 (at 1/3 EV, 1/2 EV, 1 EV steps) | ±5 EV (at 1/3 EV, 1/2 EV steps) | ±5 (at 1/3 EV, 1/2 EV, 1 EV steps) |
| AE Bracketing | ±5 (2, 3, 5, 7 frames at 1/3 EV, 2/3 EV, 1 EV steps) | ±3 (2, 3, 5, 7 frames at 1/3 EV, 1/2 EV steps) | (2, 3, 5, 7 frames at 1/3 EV, 1/2 EV, 2/3 EV, 1 EV steps) |
| WB Bracketing | Yes | Yes | Yes |
| Timelapse recording | Yes | Optional | Yes |
| GPS | Optional | Optional | Optional |
| Built-in Wi-Fi | No | No | No |
| Built-in Flash | Yes | No | Yes |
| Battery | EN-EL15 | LP-E6 | EN-EL15 |
| Battery Life | 1,200 shots (CIPA) | 950 shots (CIPA) | 900 shots (CIPA) |
| USB Version | 3.0 | 2.0 | 3.0 |
| Dimensions | 146 x 123 x 82 mm | 152 x 116 x 76 mm | 146 x 123 x 82 mm |
| Weight | 880g | 950g | 900g |
| MSRP Price / Check Price at | $3,297 | $3,399 | $2,997 |
For more detail of Nikon D810 Vs. Nikon D800E, you can read this pdf.